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This report shall not be reproduced, except in full, without permission from UL. Results contained within this report only apply to the actual product tested under the testing conditions documented in this report.

Released by UL Environment Date Issued: March 25, 2019 Product ID #: 1000634152-2105210 Test Report #: 1000634152-2105210 2019 UL LLC CDPH2

INDOOR AIR QUALITY EVALUATION FOLLOWING THE REQUIREMENTS OF CDPH/EHLB/STANDARD METHOD

Product Description DOWSIL™ 791 Silicone Weatherproofing Sealant

Customer Information

DOW SILICONES CORP KELLY ALLORE 2200 W SALZBURG RD MIDLAND MI 48686 USA

Testing Laboratory 2211 Newmarket Parkway, Suite 106, Marietta, GA 30067-9399 USA Product Category Adhesive/Sealant

Product Sub-Category Bead Adhesive Date Received February 20, 2019

Test Description

The product was received by UL Environment as packaged and shipped by the customer. The package was visually inspected and stored in a controlled environment immediately following sample check-in. Just prior to loading, a 3/8” wide bead 11.5” long was applied to a foil-wrapped plate. The sample was immediately placed inside the environmental chamber, and tested according to the specified protocol.

Test Date 2/28/2019 - 3/14/2019 Product Area Exposed length = 0.292 m

Chamber Volume 0.0870 m³ Product Loading Ratio 3.36 m/m³

Test Chamber Conditions Air change rate: 1.00 ± 0.05 1/h Inlet air flow rate: 0.087 ± 0.004 m³/h

Temperature: 22.3ºC - 23.8ºC* Relative Humidity: 50% RH ± 5%

Test Method CDPH - CA Section 01350 Standard Method for the Testing and Evaluation of Volatile Organic Chemical Emissions from Indoor Sources using Environmental Chambers Version 1.2.

Released by

Allyson M. McFry Chemistry Laboratory Director

*The temperature range specification is 23°C ± 1°. The actual temperature range listed above may vary slightly. If the range is outside this specification, data was reviewed to ensure a negative impact did not occur. This test is accredited under the laboratory’s ISO/IEC 17025 accreditation issued by ANSI-ASQ National Accreditation Board. Refer to certificate and scope of accreditation AT-1297.

PHOTOGRAPH OF SAMPLE

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This report shall not be reproduced, except in full, without permission from UL. Results contained within this report only apply to the actual product tested under the testing conditions documented in this report.

Released by UL Environment Date Issued: March 25, 2019 Product ID #: 1000634152-2105210 Test Report #: 1000634152-2105210 2019 UL LLC CDPH2

RESULTS SUMMARY

Product Description DOWSIL™ 791 Silicone Weatherproofing Sealant

Environment Product Usage

Product Surface Area

Room Volume

Ventilation Rate

(ACH) Product

Compliance?

Classroom Sealant 39 m 231 m³ 0.82 Yes

Office Sealant 14.6 m 30.6 m³ 0.68 Yes

PROJECT DESCRIPTION The product was monitored for emissions of TVOC, individual VOCs, formaldehyde and other aldehydes over the 96-hour test period. Measurements were made and predicted exposures were calculated according to the CA Section 01350 protocol. As specified in this protocol, the results at 96 hours, after 10 days of conditioning, were compared to ½ (one-half) the current Chronic Reference Exposure Levels (CRELs), as adopted from the California OEHHA list. All identified VOCs were also compared to the California-EPA OEHHA Proposition 65 list and the California-EPA Air Resource Board list of Toxic Air Contaminants (TACs).

Report Outline: Table 1 Comparison of Data To Method Requirements

Table 2 Chamber Concentrations and Emission Factors

Table 3 Most Abundant Compounds

Table 4 VOC Predicted Air Concentrations And Regulatory Information

Chain of Custody Chain of Custody

For UL Environment’s technical references and resources click here or https://industries.ul.com/wp-content/uploads/sites/2/2018/02/Technical-references-and-resources.pdf For Product Evaluation Methodologies information click here or https://industries.ul.com/wp-content/uploads/sites/2/2018/03/ProductEvaluationMethodologies-PE.pdf For Quality Control Program or Environmental Chamber Evaluations information click here or https://industries.ul.com/wp-content/uploads/sites/2/2018/02/Quality-Control-Procedures.pdf For RSD, Quality Assurance Report or other quality documents, Request here or contact ULE.

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This report shall not be reproduced, except in full, without permission from UL. Results contained within this report only apply to the actual product tested under the testing conditions documented in this report.

Released by UL Environment Date Issued: March 25, 2019 Product ID #: 1000634152-2105210 Test Report #: 1000634152-2105210 2019 UL LLC CDPH2

TABLE 1

Product Description DOWSIL™ 791 Silicone Weatherproofing Sealant

COMPARISON OF DATA TO METHOD REQUIREMENTS AT 96 HOURS FOLLOWING 10 DAYS OF CONDITIONING

Compound CAS Number

½ CREL (µg/m³)

Chamber Concentration

(μg/m³)

Emission Factor††

(µg/m•hr)

Classroom Predicted

Concentration (μg/m³)**

Office Predicted

Concentration (μg/m³)**

Meets ½ CREL?

(Classroom/ Office)

Acetaldehyde 75-07-0 70 BQL BQL BQL BQL Yes Benzene 71-43-2 1.5 BQL BQL BQL BQL Yes Carbon disulfide* 75-15-0 400 BQL BQL BQL BQL Yes Carbon tetrachloride* 56-23-5 20 BQL BQL BQL BQL Yes Chlorobenzene 108-90-7 500 BQL BQL BQL BQL Yes Chloroform* 67-66-3 150 BQL BQL BQL BQL Yes Dichlorobenzene (1,4-) 106-46-7 400 BQL BQL BQL BQL Yes Dichloroethylene (1,1)* 75-35-4 35 BQL BQL BQL BQL Yes Dimethylformamide (N,N-)* 68-12-2 40 BQL BQL BQL BQL Yes Dioxane (1,4-) 123-91-1 1,500 BQL BQL BQL BQL Yes Epichlorohydrin 106-89-8 1.5 BQL BQL BQL BQL Yes Ethylbenzene 100-41-4 1,000 BQL BQL BQL BQL Yes Ethylene glycol 107-21-1 200 BQL BQL BQL BQL Yes Ethylene glycol monoethyl ether acetate* 111-15-9 150 BQL BQL BQL BQL Yes

Ethylene glycol monoethyl ether* 110-80-5 35 BQL BQL BQL BQL Yes

Ethylene glycol monomethyl ether acetate* 110-49-6 45 BQL BQL BQL BQL Yes

Ethylene glycol monomethyl ether* 109-86-4 30 BQL BQL BQL BQL Yes

Formaldehyde 50-00-0 9.0*** BQL BQL BQL BQL Yes

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This report shall not be reproduced, except in full, without permission from UL. Results contained within this report only apply to the actual product tested under the testing conditions documented in this report.

Released by UL Environment Date Issued: March 25, 2019 Product ID #: 1000634152-2105210 Test Report #: 1000634152-2105210 2019 UL LLC CDPH2

Product Description DOWSIL™ 791 Silicone Weatherproofing Sealant

COMPARISON OF DATA TO METHOD REQUIREMENTS AT 96 HOURS FOLLOWING 10 DAYS OF CONDITIONING

Compound CAS Number

½ CREL (µg/m³)

Chamber Concentration

(μg/m³)

Emission Factor††

(µg/m•hr)

Classroom Predicted

Concentration (μg/m³)**

Office Predicted

Concentration (μg/m³)**

Meets ½ CREL?

(Classroom/ Office)

Hexane (n-) 110-54-3 3,500 BQL BQL BQL BQL Yes Isophorone* 78-59-1 1,000 BQL BQL BQL BQL Yes Isopropanol 67-63-0 3,500 52.2 15.5 3.2 10.9 Yes Methyl chloroform* 71-55-6 500 BQL BQL BQL BQL Yes Methyl t-butyl ether 1634-04-4 4,000 BQL BQL BQL BQL Yes Methylene chloride* 75-09-2 200 BQL BQL BQL BQL Yes Naphthalene 91-20-3 4.5 BQL BQL BQL BQL Yes Phenol 108-95-2 100 BQL BQL BQL BQL Yes Propylene glycol monomethyl ether* 107-98-2 3,500 BQL BQL BQL BQL Yes

Styrene 100-42-5 450 BQL BQL BQL BQL Yes Tetrachloroethylene (perchloroethylene) 127-18-4 17.5 BQL BQL BQL BQL Yes

Toluene 108-88-3 150 BQL BQL BQL BQL Yes Trichloroethylene 79-01-6 300 BQL BQL BQL BQL Yes Vinyl acetate 108-05-4 100 BQL BQL BQL BQL Yes Xylenes (m-, o-, p-) 1330-20-7 350 BQL BQL BQL BQL Yes

BQL denotes below quantifiable level of 0.04 µg for individual VOCs, with the exceptions benzene and epichlorohydrin which have a QL of 0.02 µg, based on a standard 18 L air collection volume. ††The emission factor (EF) is calculated from the chamber concentration (CC), the chamber air change rate (NC), the chamber volume (VC), and the product area exposed in the chamber (AC) as: EF = (CC*VC*NC)/AC. *Denotes compound is within volatility range of method but no calibration standard was available. **The predicted building exposure concentration (BC) is calculated from the emission factor (EF), the building air change rate (NB), the building room volume (VB), and the product area exposed in the building room (AB) as: BC = (EF*AB)/(VB*NB). For more information on Predicted Concentration modeling parameters, click here. ***Guidance value per CA Standard Method

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This report shall not be reproduced, except in full, without permission from UL. Results contained within this report only apply to the actual product tested under the testing conditions documented in this report.

Released by UL Environment Date Issued: March 25, 2019 Product ID #: 1000634152-2105210 Test Report #: 1000634152-2105210 2019 UL LLC CDPH2

TABLE 2

Product Description DOWSIL™ 791 Silicone Weatherproofing Sealant

CHAMBER CONCENTRATIONS AND EMISSION FACTORS FOR TVOC AND FORMALDEHYDE AT 24, 48, AND 96 HOURS

FOLLOWING 10 DAYS OF CONDITIONING

Elapsed Exposure Hour After 10 Days Conditioning

Chamber Concentration (μg/m³)

Emission Factor†† (µg/m•hr)

TVOC†

24 1,220 365 48 1,100 328 96 1,070 318

Formaldehyde‡

24 BQL BQL 48 BQL BQL 96 BQL BQL

BQL denotes below quantifiable level of 2 µg/m³. Exposure hours are nominal (± 1 hour). †Defined as the sum of those VOCs that elute between the retention times of n-hexane (C6) and n-hexadecane (C16) on a non-polar capillary GC column quantified based on a toluene response factor. ‡ Compound identified and quantified by DNPH derivitization and HPLC/UV analysis. ††The emission factor (EF) is calculated from the chamber concentration (CC), the chamber air change rate (NC), the chamber volume (VC), and the product area exposed in the chamber (AC) as: EF = (CC*VC*NC)/AC.

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This report shall not be reproduced, except in full, without permission from UL. Results contained within this report only apply to the actual product tested under the testing conditions documented in this report.

Released by UL Environment Date Issued: March 25, 2019 Product ID #: 1000634152-2105210 Test Report #: 1000634152-2105210 2019 UL LLC CDPH2

TABLE 3

Product Description DOWSIL™ 791 Silicone Weatherproofing Sealant

TEN MOST ABUNDANT IDENTIFIED INDIVIDUAL VOLATILE ORGANIC COMPOUNDS (VOCs) AND/OR ALDEHYDES

AT 96 HOURS FOLLOWING 10 DAYS OF CONDITIONING

CAS Number Compound

Chamber Concentration

(μg/m³)

Emission Factor††

(µg/m•hr)

Calculated Predicted Exposure Concentration**

(μg/m³)

Classroom Office --- TVOC‡‡ 1,070 318 65.5 223

541-02-6 Cyclopentasiloxane, decamethyl 468 139 28.7 97.7 540-97-6 Cyclohexasiloxane, dodecamethyl 452 135 27.7 94.4 107-50-6 Cycloheptasiloxane, tetradecamethyl-* 54.9 16.4 3.4 11.5 67-63-0 2-Propanol (Isopropanol)† 52.2 15.5 3.2 10.9

556-67-2 Cyclotetrasiloxane, octamethyl 50.9 15.2 3.1 10.7 141-97-9 Butanoic acid, 3-oxo-, ethyl ester* 21.3 6.3 1.3 4.4

542-08-5 Butanoic acid, 3-oxo-, 1-methylethyl ester* 11.6 3.5 0.7 2.5

100-52-7 Benzaldehyde‡ 6.6 2.0 0.4 1.4 105-45-3 Butanoic acid, 3-oxo-, methyl ester* 5.9 1.7 0.4 1.2

5878-19-3 2-Propanone, 1-methoxy* 4.5 1.3 0.3 0.9

Exposure hours are nominal (± 1 hour). VOC data obtained by scanning GC/MS; identification of compound made by retention time and mass spectral characteristics. †Quantified using multipoint authentic standard curve. Other VOCs quantified relative to toluene. *Identification based on NIST mass spectral database only. ‡Compound identified and quantified by DNPH derivitization and HPLC/UV analysis. ††The emission factor (EF) is calculated from the chamber concentration (CC), the chamber air change rate (NC), the chamber volume (VC), and the product area exposed in the chamber (AC) as: EF = (CC*VC*NC)/AC. ‡‡Defined as the sum of those VOCs that elute between the retention times of n-hexane (C6) and n-hexadecane (C16) on a non-polar capillary GC column quantified based on a toluene response factor. **The predicted building exposure concentration (BC) is calculated from the emission factor (EF), the building air change rate (NB), the building room volume (VB), and the product area exposed in the building room (AB) as: BC = (EF*AB)/(VB*NB). For more information on Predicted Concentration modeling parameters, click here.

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Released by UL Environment Date Issued: March 25, 2019 Product ID #: 1000634152-2105210 Test Report #: 1000634152-2105210 2019 UL LLC CDPH2

TABLE 4

Product Description DOWSIL™ 791 Silicone Weatherproofing Sealant VOC PREDICTED AIR CONCENTRATIONS AND REGULATORY INFORMATION

AT 96 HOURS FOLLOWING 10 DAYS OF CONDITIONING

CAS Number

Compound Chamber

Concentration (μg/m³)

Emission Factor††

(µg/m•hr)

Predicted Exposure Concentration**

(µg/m³)

Indicates Presence On List

CA PROP 65

CA AIR TOXIC CREL

Classroom Office 67-63-0 2-Propanol (Isopropanol)† 52.2 15.5 3.2 10.9 (IIB)

†Quantified using multipoint authentic standard curve. Other VOCs quantified relative to toluene. ‡Compound identified and quantified by DNPH derivitization and HPLC/UV analysis. ††The emission factor (EF) is calculated from the chamber concentration (CC), the chamber air change rate (NC), the chamber volume (VC), and the product area exposed in the chamber (AC) as: EF = (CC*VC*NC)/AC. **The predicted building exposure concentration (BC) is calculated from the emission factor (EF), the building air change rate (NB), the building room volume (VB), and the product area exposed in the building room (AB) as: BC = (EF*AB)/(VB*NB). For more information on Predicted Concentration modeling parameters, click here.

CAL Prop. 65: California Health and Welfare Agency, Proposition 65 Chemicals 1 = known to cause cancer 2 = known to cause reproductive toxicity

CAL Toxic Air Contaminant: I) Substances identified as Toxic Air Contaminants, known to be emitted in California, with a full set of health values reviewed by the Scientific Review Panel. IIA) Substances identified as Toxic Air Contaminants, known to be emitted in California, with one or more health values under development by the Office of Environmental Health Hazard Assessment for review by the Scientific Review Panel. IIB) Substances NOT identified as Toxic Air Contaminants, known to be emitted in California, with one or more health values under development by the Office of Environmental Health Hazard Assessment for review by the Scientific Review Panel. III) Substances known to be emitted in California, and are NOMINATED for development of health values or additional health values. IVA) Substance identified as Toxic Air Contaminants, known to be emitted in California, and are TO BE EVALUATED for entry into Category III. IVB) Substance NOT identified as Toxic Air Contaminants, known to be emitted in California, and are TO BE EVALUATED for entry into Category III. V) Substance identified as Toxic Air Contaminants, and NOT KNOWN TO BE EMITTED from stationary source facilities in California based on information from the AB 2588 Air Toxic "Hot Spots" Program and the California Toxic Release Inventory. VI) Substances identified as Toxic Air Contaminants, NOT KNOWN TO BE EMITTED from stationary source facilities in California, and are active ingredients in pesticides in California. Chronic REL: California Office of Environmental Health Hazard Assessment (OEHHA), Chronic Reference Exposure Levels = Found in Listing

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This report shall not be reproduced, except in full, without permission from UL. Results contained within this report only apply to the actual product tested under the testing conditions documented in this report.

Released by UL Environment Date Issued: March 25, 2019 Product ID #: 1000634152-2105210 Test Report #: 1000634152-2105210 2019 UL LLC CDPH2

Product Description DOWSIL™ 791 Silicone Weatherproofing Sealant

CHAIN OF CUSTODY

VOC EMISSION RESULTS COMPARISON TO STANDARD

Standard referenced: CDPH/EHLB/Standard Method V1.2 (January 2017) “Standard Method for the Testing and Evaluation of Volatile Organic Chemical Emissions from Indoor Sources Using Environmental Chambers” (aka CA Section 01350).

PRODUCT SAMPLE INFORMATION

Manufacturer Dow Silicones Corp Product Description DOWSIL™ 791 Silicone Weatherproofing Sealant

Product Type N/A Sample Identification UL Environment’s 1000634152-2105210

Manufactured Date Not Provided Test Completed Date 3/14/2019

UL Environment Report # 1000634152-2105210 Report Date March 25, 2019

TEST RESULTS COMPARISON TO STANDARD CRITERIA

Environment Classroom Office Surface Area 39 m 14.6 m

Criterion Meets? Criterion Meets? Individual VOC ≤ ½ CREL Yes ≤ ½ CREL Yes Formaldehyde ≤ 9.0 µg/m³ Yes ≤ 9.0 µg/m³ Yes

Environment Classroom Office Surface Area 39 m 14.6 m

TVOC 0.5 mg/m³ or less 0.5 mg/m³ or less TVOC comparison is based on LEED BD+C: New Construction v4 (LEED v4), Indoor environmental quality (EQ) category/Low-emitting materials credit/Emissions and content requirements/General emissions evaluation. http://www.usgbc.org/node/2614095?return=/credits/new-construction/v4/indoor-environmental-quality

Reviewed By

Allyson McFry Chemistry Laboratory Manager

Complete testing and data results are presented in UL Environment Report Disclaimer: This Comparison affirms that: 1) the product sample was tested according to the referenced standard; 2) the measured VOC emissions were evaluated for the defined exposure scenario(s); and 3) if so indicated above that the results meet the criteria of the referenced standard(s). UL Environment did not select the samples, determine if the samples were representative of production samples, witness the production of test samples, or were we provided with information relative to the formulation or identification of component materials used in the test samples. The test results apply only to the actual samples tested. The issuance of this Comparison in no way implies Listing, Classification or Recognition by UL and does not authorize the use of UL Listing, Classification or Recognition Marks or any other reference to UL on the product or system. UL Environment authorizes the above named company to reproduce this Comparison provided it is reproduced in its entirety. The name, brand or marks of UL cannot be used in any packaging, advertising, promotion or marketing relating to the data in this Comparison, without UL's prior written permission. UL, its subsidiaries, employees and agents shall not be responsible to anyone for the use or nonuse of the information contained in this Comparison, and shall not incur any obligation or liability for damages, including consequential damages, arising out of or in connection with the use of, or inability to use, the information contained in this Comparison.